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Comparison of detection sensitivity of oliguric and severe oliguric events and their duration. Gray indicates oliguric events, and red indicates severe oliguric events. Oliguric events were observed in 34 patients. There were a total of 115 oliguric events detected by camera and 32 detected by nurses. The total duration of oliguric events detected by the camera was 199 h versus only 37 h detected by nurses
